2B1 Oka, (Russian: "2Б1 Ока" - "Oka River"), is a Soviet 420 mm (17 in) self-propelled heavy mortar. 2B1 is its GRAU designation. It was designed to deliver tactical nuclear payloads, however it was plagued by technical issues caused by the sheer size of the gun and the massive recoil during firing.

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At the height of the Cold War, the Soviet Union developed an enormous tank-based, nuclear warhead-firing mobile mortar cannon. The 420-mm self-propelled mortar 2B1 "Oka" in Saint-Petersburg...

2022年6月6日 · The 2B1 is a defining example of Soviet “flexing”. A 420 mm (16.5 inch) gun sat on top of an overburdened chassis – originally intended for the T-10 – that pretty much disassembled itself every time it fired.

Capable of firing continuously 12 times per hour, firing 750 kg nuclear projectiles up to 45 km away, the 2B1 Oka is the most fearsome nuclear supergun ever built. The 2B1 Oka was built based...

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In total, the Kirov plant built four self-propelled units 2B1. The 420 mm mortar was intended for firing a 750-kilogram nuclear bomb at a distance of up to 45 kilometers. The origin of the name...

Primer on Loss Calculation nder §2B1.1U (2022) 1 I. INTRODUCTION This primer discusses common issues regarding loss calculation under §2B1.1(b)(1), which provides for offense level increases based on the amount of loss . involved in the offense. 1. Although the primer identifies some of the key cases and concepts

2018年7月29日 · In the spring of 1953, at the military training ground in Nevada, the Americans conducted the first tests of the T-131 gun “Atomic Annie”. During the test, an American gun fired a 280 mm round of ammunition. Its flight lasted for 25 seconds. Work on such weapons was conducted for several years.

2025年1月24日 · Self-propelled mortar 2B1 "Oka" The undercarriage of the car, designed by the Kirovsky plant design bureau, according to the GBTU classification, received the designation "Object 273". This chassis was maximally unified with the ACS 2A3 and met the increased requirements for structural strength.